
package cn;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

import cn.drknt.lib.Data_type;
import cn.drknt.lib.Load_args;
import cn.drknt.lib.box_label;
import cn.drknt.lib.data_struct;
import cn.wrapper.pthread_t;

public class data extends data_struct
{

//pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

//list get_paths(String filename)
//{
//    String path;
//    FILE file = fopen(filename, "r");
//    if(!file) file_error(filename);
//    list lines = make_list();
//    while((path=fgetl(file))){
//        list_insert(lines, path);
//    }
//    fclose(file);
//    return lines;
//}
    public static String[] get_paths2(String filename)throws IOException,Exception {
    	File file=new File(filename);
        if(!file.exists()) utils.file_error(filename);
        BufferedReader fp=new BufferedReader(new FileReader(file));
        String line;
        int nu = 0;
        List<String>list=new ArrayList<String>();
        while((line=fp.readLine()) != null){
        	list.add(line);
        }
        fp.close();
        String[] ret=new String[list.size()];
        ret=list.toArray(ret);
        return ret;
    }
/*
String[] get_random_paths_indexes(String[] paths, int n, int m, int[] indexes)
{
    String[] random_paths = calloc(n, sizeof(char*));
    int i;
    pthread_mutex_lock(&mutex);
    for(i = 0; i < n; ++i){
        int index = rand()%m;
        indexes[i] = index;
        random_paths[i] = paths[index];
        if(i == 0) printf("%s\n", paths[index]);
    }
    pthread_mutex_unlock(&mutex);
    return random_paths;
}
*/

    synchronized String[] get_random_paths(String[] paths, int n, int m)
{
   	printf("load %d from %d images random in thread: %s, %s\n",n,m,Thread.currentThread().getId(), Thread.currentThread().getName());
    String[] random_paths = new String[n];//calloc(n, sizeof(char*));
    int i;
//    pthread_mutex_lock(&mutex);
    for(i = 0; i < n; ++i){
        int index = rand()%m;
        random_paths[i] = paths[index];
        //if(i == 0) printf("%s\n", paths[index]);
    }
//    pthread_mutex_unlock(&mutex);
    return random_paths;
}

//String[] find_replace_paths(String[] paths, int n, String find, String replace)
//{
//    String[] replace_paths = calloc(n, sizeof(char*));
//    int i;
//    for(i = 0; i < n; ++i){
//        char replaced[4096];
//        find_replace(paths[i], find, replace, replaced);
//        replace_paths[i] = copy_string(replaced);
//    }
//    return replace_paths;
//}

//matrix load_image_paths_gray(String[] paths, int n, int w, int h)
//{
//    int i;
//    matrix X;
//    X.rows = n;
//    X.vals = calloc(X.rows, 1/*sizeof(float*)*/, float[].class);
//    X.cols = 0;
//
//    for(i = 0; i < n; ++i){
//        image im = load_image(paths[i], w, h, 3);
//
//        image gray = grayscale_image(im);
//        free_image(im);
//        im = gray;
//
//        X.vals[i] = im.data;
//        X.cols = im.h*im.w*im.c;
//    }
//    return X;
//}
//
//matrix load_image_paths(String[] paths, int n, int w, int h)
//{
//    int i;
//    matrix X;
//    X.rows = n;
//    X.vals = calloc(X.rows, 1/*sizeof(float*)*/);
//    X.cols = 0;
//
//    for(i = 0; i < n; ++i){
//        image im = load_image_color(paths[i], w, h);
//        X.vals[i] = im.data;
//        X.cols = im.h*im.w*im.c;
//    }
//    return X;
//}
//
//matrix load_image_augment_paths(String[] paths, int n, int min, int max, int size, float angle, float aspect, float hue, float saturation, float exposure, int center)
//{
//    int i;
//    matrix X;
//    X.rows = n;
//    X.vals = calloc(X.rows, 1/*sizeof(float*)*/);
//    X.cols = 0;
//
//    for(i = 0; i < n; ++i){
//        image im = load_image_color(paths[i], 0, 0);
//        image crop;
//        if(center){
//            crop = center_crop_image(im, size, size);
//        } else {
//            crop = random_augment_image(im, angle, aspect, min, max, size, size);
//        }
//        int flip = rand()%2;
//        if (flip) flip_image(crop);
//        random_distort_image(crop, hue, saturation, exposure);
//
//        /*
//        show_image(im, "orig");
//        show_image(crop, "crop");
//        cvWaitKey(0);
//        */
//        free_image(im);
//        X.vals[i] = crop.data;
//        X.cols = crop.h*crop.w*crop.c;
//    }
//    return X;
//}
//
//
public static box_label[] read_boxes(String filename, int[] n)//throws Exception
{
//    FILE *file = fopen(filename, "r");
    File file=new File(filename);
    if(!file.exists()) {
    	try {
			utils.file_error(filename);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	return null;
    }
    
    float x, y, h, w;
    int id;
    int count = 0;
    int size = 64;
    box_label[] boxes = new box_label[size];//calloc(size, sizeof(box_label));
    for (int i = 0; i < boxes.length; i++) {/////////sjx
    	boxes[i]=new box_label();
	}
    
    Scanner fp = null;
    try {
    	fp=new Scanner(new FileReader(file));
        while(fp.hasNext()) {
        	id=fp.nextInt();
        	x=fp.nextFloat();
        	y=fp.nextFloat();
        	w=fp.nextFloat();
        	h=fp.nextFloat();
//        }
//        while(fscanf(file, "%d %f %f %f %f", &id, &x, &y, &w, &h) == 5){
            if(count == size) {
                size = size * 2;
                boxes = new box_label[size];//(boxes, size*sizeof(box_label));
                for (int i = 0; i < boxes.length; i++) {/////////sjx
                	boxes[i]=new box_label();
				}
            }
            boxes[count].id = id;
            boxes[count].x = x;
            boxes[count].y = y;
            boxes[count].h = h;
            boxes[count].w = w;
            boxes[count].left   = x - w/2;
            boxes[count].right  = x + w/2;
            boxes[count].top    = y - h/2;
            boxes[count].bottom = y + h/2;
            ++count;
        }	
	} catch (Exception e) {
		// TODO: handle exception
		e.printStackTrace();
	}finally {
		try {
			if(fp!=null) {
				fp.close();
			}
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
    
//    fclose(file);
    
    n[0] = count;
    return boxes;
}
//box_label read_boxes(String filename, int[] n)
//{
//    FILE file = fopen(filename, "r");
//    if(null==file) file_error(filename);
//    float x, y, h, w;
//    int id;
//    int count = 0;
//    int size = 64;
//    box_label[] boxes = new box_label[size];//calloc(size, sizeof(box_label));
//    while(fscanf(file, "%d %f %f %f %f", &id, &x, &y, &w, &h) == 5){
//        if(count == size) {
//            size = size * 2;
//            boxes = realloc(boxes, size*sizeof(box_label));
//        }
//        boxes[count].id = id;
//        boxes[count].x = x;
//        boxes[count].y = y;
//        boxes[count].h = h;
//        boxes[count].w = w;
//        boxes[count].left   = x - w/2;
//        boxes[count].right  = x + w/2;
//        boxes[count].top    = y - h/2;
//        boxes[count].bottom = y + h/2;
//        ++count;
//    }
//    fclose(file);
//    n[0] = count;
//    return boxes;
//}

static void randomize_boxes(box_label []b, int n)
{
    int i;
    for(i = 0; i < n; ++i){
        box_label swap = b[i];
        int index = rand()%n;
        b[i] = b[index];
        b[index] = swap;
    }
}

static void correct_boxes(box_label []boxes, int n, float dx, float dy, float sx, float sy, int flip)
{
    int i;
    for(i = 0; i < n; ++i){
        if(boxes[i].x == 0 && boxes[i].y == 0) {
            boxes[i].x = 999999;
            boxes[i].y = 999999;
            boxes[i].w = 999999;
            boxes[i].h = 999999;
            continue;
        }
        boxes[i].left   = boxes[i].left  * sx - dx;
        boxes[i].right  = boxes[i].right * sx - dx;
        boxes[i].top    = boxes[i].top   * sy - dy;
        boxes[i].bottom = boxes[i].bottom* sy - dy;

        if(flip!=0){
            float swap = boxes[i].left;
            boxes[i].left = 1 - boxes[i].right;
            boxes[i].right = 1 - swap;
        }

        boxes[i].left =  constrain(0, 1, boxes[i].left);
        boxes[i].right = constrain(0, 1, boxes[i].right);
        boxes[i].top =   constrain(0, 1, boxes[i].top);
        boxes[i].bottom =   constrain(0, 1, boxes[i].bottom);

        boxes[i].x = (boxes[i].left+boxes[i].right)/2;
        boxes[i].y = (boxes[i].top+boxes[i].bottom)/2;
        boxes[i].w = (boxes[i].right - boxes[i].left);
        boxes[i].h = (boxes[i].bottom - boxes[i].top);

        boxes[i].w = constrain(0, 1, boxes[i].w);
        boxes[i].h = constrain(0, 1, boxes[i].h);
    }
}

//void fill_truth_swag(String path, float []truth, int classes, int flip, float dx, float dy, float sx, float sy)
//{
//    char labelpath[4096];
//    find_replace(path, "images", "labels", labelpath);
//    find_replace(labelpath, "JPEGImages", "labels", labelpath);
//    find_replace(labelpath, ".jpg", ".txt", labelpath);
//    find_replace(labelpath, ".JPG", ".txt", labelpath);
//    find_replace(labelpath, ".JPEG", ".txt", labelpath);
//
//    int count = 0;
//    box_label *boxes = read_boxes(labelpath, &count);
//    randomize_boxes(boxes, count);
//    correct_boxes(boxes, count, dx, dy, sx, sy, flip);
//    float x,y,w,h;
//    int id;
//    int i;
//
//    for (i = 0; i < count && i < 30; ++i) {
//        x =  boxes[i].x;
//        y =  boxes[i].y;
//        w =  boxes[i].w;
//        h =  boxes[i].h;
//        id = boxes[i].id;
//
//        if (w < .0 || h < .0) continue;
//
//        int index = (4+classes) * i;
//
//        truth[index++] = x;
//        truth[index++] = y;
//        truth[index++] = w;
//        truth[index++] = h;
//
//        if (id < classes) truth[index+id] = 1;
//    }
//    free(boxes);
//}
//
//void fill_truth_region(String path, float []truth, int classes, int num_boxes, int flip, float dx, float dy, float sx, float sy)
//{
//    char labelpath[4096];
//    find_replace(path, "images", "labels", labelpath);
//    find_replace(labelpath, "JPEGImages", "labels", labelpath);
//
//    find_replace(labelpath, ".jpg", ".txt", labelpath);
//    find_replace(labelpath, ".png", ".txt", labelpath);
//    find_replace(labelpath, ".JPG", ".txt", labelpath);
//    find_replace(labelpath, ".JPEG", ".txt", labelpath);
//    int count = 0;
//    box_label *boxes = read_boxes(labelpath, &count);
//    randomize_boxes(boxes, count);
//    correct_boxes(boxes, count, dx, dy, sx, sy, flip);
//    float x,y,w,h;
//    int id;
//    int i;
//
//    for (i = 0; i < count; ++i) {
//        x =  boxes[i].x;
//        y =  boxes[i].y;
//        w =  boxes[i].w;
//        h =  boxes[i].h;
//        id = boxes[i].id;
//
//        if (w < .005 || h < .005) continue;
//
//        int col = (int)(x*num_boxes);
//        int row = (int)(y*num_boxes);
//
//        x = x*num_boxes - col;
//        y = y*num_boxes - row;
//
//        int index = (col+row*num_boxes)*(5+classes);
//        if (truth[index]) continue;
//        truth[index++] = 1;
//
//        if (id < classes) truth[index+id] = 1;
//        index += classes;
//
//        truth[index++] = x;
//        truth[index++] = y;
//        truth[index++] = w;
//        truth[index++] = h;
//    }
//    free(boxes);
//}
//
//void load_rle(image im, int[] rle, int n)
//{
//    int count = 0;
//    int curr = 0;
//    int i,j;
//    for(i = 0; i < n; ++i){
//        for(j = 0; j < rle[i]; ++j){
//            im.data[count++] = curr;
//        }
//        curr = 1 - curr;
//    }
//    for(; count < im.h*im.w*im.c; ++count){
//        im.data[count] = curr;
//    }
//}
//
//void or_image(image src, image dest, int c)
//{
//    int i;
//    for(i = 0; i < src.w*src.h; ++i){
//        if(src.data[i]) dest.data[dest.w*dest.h*c + i] = 1;
//    }
//}
//
//void exclusive_image(image src)
//{
//    int k, j, i;
//    int s = src.w*src.h;
//    for(k = 0; k < src.c-1; ++k){
//        for(i = 0; i < s; ++i){
//            if (src.data[k*s + i]){
//                for(j = k+1; j < src.c; ++j){
//                    src.data[j*s + i] = 0;
//                }
//            }
//        }
//    }
//}
//
//box bound_image(image im)
//{
//    int x,y;
//    int minx = im.w;
//    int miny = im.h;
//    int maxx = 0;
//    int maxy = 0;
//    for(y = 0; y < im.h; ++y){
//        for(x = 0; x < im.w; ++x){
//            if(im.data[y*im.w + x]){
//                minx = (x < minx) ? x : minx;
//                miny = (y < miny) ? y : miny;
//                maxx = (x > maxx) ? x : maxx;
//                maxy = (y > maxy) ? y : maxy;
//            }
//        }
//    }
//    box b = {minx, miny, maxx-minx + 1, maxy-miny + 1};
//    //printf("%f %f %f %f\n", b.x, b.y, b.w, b.h);
//    return b;
//}
//
//void fill_truth_iseg(String path, int num_boxes, float[] truth, int classes, int w, int h, augment_args aug, int flip, int mw, int mh)
//{
//    char labelpath[4096];
//    find_replace(path, "images", "mask", labelpath);
//    find_replace(labelpath, "JPEGImages", "mask", labelpath);
//    find_replace(labelpath, ".jpg", ".txt", labelpath);
//    find_replace(labelpath, ".JPG", ".txt", labelpath);
//    find_replace(labelpath, ".JPEG", ".txt", labelpath);
//    FILE *file = fopen(labelpath, "r");
//    if(!file) file_error(labelpath);
//    char buff[32788];
//    int id;
//    int i = 0;
//    image part = make_image(w, h, 1);
//    while((fscanf(file, "%d %s", &id, buff) == 2) && i < num_boxes){
//        int n = 0;
//        int[] rle = read_intlist(buff, &n, 0);
//        load_rle(part, rle, n);
//        image sized = rotate_crop_image(part, aug.rad, aug.scale, aug.w, aug.h, aug.dx, aug.dy, aug.aspect);
//        if(flip) flip_image(sized);
//        box b = bound_image(sized);
//        if(b.w > 0){
//            image crop = crop_image(sized, b.x, b.y, b.w, b.h);
//            image mask = resize_image(crop, mw, mh);
//            truth[i*(4 + mw*mh + 1) + 0] = (b.x + b.w/2.)/sized.w;
//            truth[i*(4 + mw*mh + 1) + 1] = (b.y + b.h/2.)/sized.h;
//            truth[i*(4 + mw*mh + 1) + 2] = b.w/sized.w;
//            truth[i*(4 + mw*mh + 1) + 3] = b.h/sized.h;
//            int j;
//            for(j = 0; j < mw*mh; ++j){
//                truth[i*(4 + mw*mh + 1) + 4 + j] = mask.data[j];
//            }
//            truth[i*(4 + mw*mh + 1) + 4 + mw*mh] = id;
//            free_image(crop);
//            free_image(mask);
//            ++i;
//        }
//        free_image(sized);
//        free(rle);
//    }
//    fclose(file);
//    free_image(part);
//}
//
//
public static void fill_truth_detection(String path, int num_boxes, float[] truth, int classes, int flip, float dx, float dy, float sx, float sy)
{
    String labelpath=null;//char labelpath[4096];
    labelpath=find_replace(path, "images", "labels", labelpath);
    labelpath=find_replace(labelpath, "JPEGImages", "labels", labelpath);

    labelpath=find_replace(labelpath, "raw", "labels", labelpath);
    labelpath=find_replace(labelpath, ".jpg", ".txt", labelpath);
    labelpath=find_replace(labelpath, ".png", ".txt", labelpath);
    labelpath=find_replace(labelpath, ".JPG", ".txt", labelpath);
    labelpath=find_replace(labelpath, ".JPEG", ".txt", labelpath);
    int[] _count = new int[] {0};
    box_label[] boxes = read_boxes(labelpath,_count);
    int count=_count[0];
    randomize_boxes(boxes, count);
    correct_boxes(boxes, count, dx, dy, sx, sy, flip);
    if(count > num_boxes) count = num_boxes;
    float x,y,w,h;
    int id;
    int i;

    for (i = 0; i < count; ++i) {
        x =  boxes[i].x;
        y =  boxes[i].y;
        w =  boxes[i].w;
        h =  boxes[i].h;
        id = boxes[i].id;

        if ((w < .001 || h < .001)) continue;

        truth[i*5+0] = x;
        truth[i*5+1] = y;
        truth[i*5+2] = w;
        truth[i*5+3] = h;
        truth[i*5+4] = id;
    }
    free(boxes);
}

////#define NUMCHARS 37
//
//void print_letters(float[] pred, int n)
//{
//    int i;
//    for(i = 0; i < n; ++i){
//        int index = max_index(pred+i*NUMCHARS, NUMCHARS);
//        printf("%c", int_to_alphanum(index));
//    }
//    printf("\n");
//}
//
//void fill_truth_captcha(String path, int n, float[] truth)
//{
//    String begin = strrchr(path, '/');
//    ++begin;
//    int i;
//    for(i = 0; i < strlen(begin) && i < n && begin[i] != '.'; ++i){
//        int index = alphanum_to_int(begin[i]);
//        if(index > 35) printf("Bad %c\n", begin[i]);
//        truth[i*NUMCHARS+index] = 1;
//    }
//    for(;i < n; ++i){
//        truth[i*NUMCHARS + NUMCHARS-1] = 1;
//    }
//}
//
//data load_data_captcha(String[] paths, int n, int m, int k, int w, int h)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//    d.X = load_image_paths(paths, n, w, h);
//    d.y = make_matrix(n, k*NUMCHARS);
//    int i;
//    for(i = 0; i < n; ++i){
//        fill_truth_captcha(paths[i], k, d.y.vals[i]);
//    }
//    if(m) free(paths);
//    return d;
//}
//
//data load_data_captcha_encode(String[] paths, int n, int m, int w, int h)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//    d.X = load_image_paths(paths, n, w, h);
//    d.X.cols = 17100;
//    d.y = d.X;
//    if(m) free(paths);
//    return d;
//}
//
//void fill_truth(String path, String[] labels, int k, float[] truth)
//{
//    int i;
//    memset(truth, 0, k*sizeof(float));
//    int count = 0;
//    for(i = 0; i < k; ++i){
//        if(strstr(path, labels[i])){
//            truth[i] = 1;
//            ++count;
//        }
//    }
//    if(count != 1 && (k != 1 || count != 0)) printf("Too many or too few labels: %d, %s\n", count, path);
//}
//
//void fill_hierarchy(float[] truth, int k, tree *hierarchy)
//{
//    int j;
//    for(j = 0; j < k; ++j){
//        if(truth[j]){
//            int parent = hierarchy->parent[j];
//            while(parent >= 0){
//                truth[parent] = 1;
//                parent = hierarchy->parent[parent];
//            }
//        }
//    }
//    int i;
//    int count = 0;
//    for(j = 0; j < hierarchy->groups; ++j){
//        //printf("%d\n", count);
//        int mask = 1;
//        for(i = 0; i < hierarchy->group_size[j]; ++i){
//            if(truth[count + i]){
//                mask = 0;
//                break;
//            }
//        }
//        if (mask) {
//            for(i = 0; i < hierarchy->group_size[j]; ++i){
//                truth[count + i] = SECRET_NUM;
//            }
//        }
//        count += hierarchy->group_size[j];
//    }
//}
//
//matrix load_regression_labels_paths(String[] paths, int n)
//{
//    matrix y = make_matrix(n, 1);
//    int i;
//    for(i = 0; i < n; ++i){
//        char labelpath[4096];
//        find_replace(paths[i], "images", "targets", labelpath);
//        find_replace(labelpath, "JPEGImages", "targets", labelpath);
//        find_replace(labelpath, ".jpg", ".txt", labelpath);
//        find_replace(labelpath, ".png", ".txt", labelpath);
//
//        FILE *file = fopen(labelpath, "r");
//        fscanf(file, "%f", &(y.vals[i][0]));
//        fclose(file);
//    }
//    return y;
//}
//
//matrix load_labels_paths(String[] paths, int n, String[] labels, int k, tree *hierarchy)
//{
//    matrix y = make_matrix(n, k);
//    int i;
//    for(i = 0; i < n && labels; ++i){
//        fill_truth(paths[i], labels, k, y.vals[i]);
//        if(hierarchy){
//            fill_hierarchy(y.vals[i], k, hierarchy);
//        }
//    }
//    return y;
//}
//
//matrix load_tags_paths(String[] paths, int n, int k)
//{
//    matrix y = make_matrix(n, k);
//    int i;
//    int count = 0;
//    for(i = 0; i < n; ++i){
//        char label[4096];
//        find_replace(paths[i], "imgs", "labels", label);
//        find_replace(label, "_iconl.jpeg", ".txt", label);
//        FILE *file = fopen(label, "r");
//        if(!file){
//            find_replace(label, "labels", "labels2", label);
//            file = fopen(label, "r");
//            if(!file) continue;
//        }
//        ++count;
//        int tag;
//        while(fscanf(file, "%d", &tag) == 1){
//            if(tag < k){
//                y.vals[i][tag] = 1;
//            }
//        }
//        fclose(file);
//    }
//    printf("%d/%d\n", count, n);
//    return y;
//}
//
//String[] get_labels(String filename)
//{
//    list *plist = get_paths(filename);
//    String[] labels = (String[] )list_to_array(plist);
//    free_list(plist);
//    return labels;
//}
public static String[] get_labels(String filename)throws IOException,Exception {
	File file=new File(filename);
    if(!file.exists()) utils.file_error(filename);
    BufferedReader fp=new BufferedReader(new FileReader(file));
    String line;
    int nu = 0;
    List<String>list=new ArrayList<String>();
    while((line=fp.readLine()) != null){
    	list.add(line);
    }
    fp.close();
    String[] ret=new String[list.size()];
    ret=list.toArray(ret);
    return ret;
}
public static void free_data(data d)
{
    if(!d.shallow){
        free_matrix(d.X);
        free_matrix(d.y);
    }else{
        free(d.X.vals);
        free(d.y.vals);
    }
}

//image get_segmentation_image(String path, int w, int h, int classes)
//{
//    char labelpath[4096];
//    find_replace(path, "images", "mask", labelpath);
//    find_replace(labelpath, "JPEGImages", "mask", labelpath);
//    find_replace(labelpath, ".jpg", ".txt", labelpath);
//    find_replace(labelpath, ".JPG", ".txt", labelpath);
//    find_replace(labelpath, ".JPEG", ".txt", labelpath);
//    image mask = make_image(w, h, classes);
//    FILE *file = fopen(labelpath, "r");
//    if(!file) file_error(labelpath);
//    char buff[32788];
//    int id;
//    image part = make_image(w, h, 1);
//    while(fscanf(file, "%d %s", &id, buff) == 2){
//        int n = 0;
//        int[] rle = read_intlist(buff, &n, 0);
//        load_rle(part, rle, n);
//        or_image(part, mask, id);
//        free(rle);
//    }
//    //exclusive_image(mask);
//    fclose(file);
//    free_image(part);
//    return mask;
//}
//
//image get_segmentation_image2(String path, int w, int h, int classes)
//{
//    char labelpath[4096];
//    find_replace(path, "images", "mask", labelpath);
//    find_replace(labelpath, "JPEGImages", "mask", labelpath);
//    find_replace(labelpath, ".jpg", ".txt", labelpath);
//    find_replace(labelpath, ".JPG", ".txt", labelpath);
//    find_replace(labelpath, ".JPEG", ".txt", labelpath);
//    image mask = make_image(w, h, classes+1);
//    int i;
//    for(i = 0; i < w*h; ++i){
//        mask.data[w*h*classes + i] = 1;
//    }
//    FILE *file = fopen(labelpath, "r");
//    if(!file) file_error(labelpath);
//    char buff[32788];
//    int id;
//    image part = make_image(w, h, 1);
//    while(fscanf(file, "%d %s", &id, buff) == 2){
//        int n = 0;
//        int[] rle = read_intlist(buff, &n, 0);
//        load_rle(part, rle, n);
//        or_image(part, mask, id);
//        for(i = 0; i < w*h; ++i){
//            if(part.data[i]) mask.data[w*h*classes + i] = 0;
//        }
//        free(rle);
//    }
//    //exclusive_image(mask);
//    fclose(file);
//    free_image(part);
//    return mask;
//}
//
//data load_data_seg(int n, String[] paths, int m, int w, int h, int classes, int min, int max, float angle, float aspect, float hue, float saturation, float exposure, int div)
//{
//    String[] random_paths = get_random_paths(paths, n, m);
//    int i;
//    data d = {0};
//    d.shallow = 0;
//
//    d.X.rows = n;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//    d.X.cols = h*w*3;
//
//
//    d.y.rows = n;
//    d.y.cols = h*w*classes/div/div;
//    d.y.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//
//    for(i = 0; i < n; ++i){
//        image orig = load_image_color(random_paths[i], 0, 0);
//        augment_args a = random_augment_args(orig, angle, aspect, min, max, w, h);
//        image sized = rotate_crop_image(orig, a.rad, a.scale, a.w, a.h, a.dx, a.dy, a.aspect);
//
//        int flip = rand()%2;
//        if(flip) flip_image(sized);
//        random_distort_image(sized, hue, saturation, exposure);
//        d.X.vals[i] = sized.data;
//
//        image mask = get_segmentation_image(random_paths[i], orig.w, orig.h, classes);
//        //image mask = make_image(orig.w, orig.h, classes+1);
//        image sized_m = rotate_crop_image(mask, a.rad, a.scale/div, a.w/div, a.h/div, a.dx/div, a.dy/div, a.aspect);
//
//        if(flip) flip_image(sized_m);
//        d.y.vals[i] = sized_m.data;
//
//        free_image(orig);
//        free_image(mask);
//
//        /*
//           image rgb = mask_to_rgb(sized_m, classes);
//           show_image(rgb, "part");
//           show_image(sized, "orig");
//           cvWaitKey(0);
//           free_image(rgb);
//         */
//    }
//    free(random_paths);
//    return d;
//}
//
//data load_data_iseg(int n, String[] paths, int m, int w, int h, int classes, int boxes, int coords, int min, int max, float angle, float aspect, float hue, float saturation, float exposure)
//{
//    String[] random_paths = get_random_paths(paths, n, m);
//    int i;
//    data d = {0};
//    d.shallow = 0;
//
//    d.X.rows = n;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//    d.X.cols = h*w*3;
//
//    d.y = make_matrix(n, (coords+1)*boxes);
//
//    for(i = 0; i < n; ++i){
//        image orig = load_image_color(random_paths[i], 0, 0);
//        augment_args a = random_augment_args(orig, angle, aspect, min, max, w, h);
//        image sized = rotate_crop_image(orig, a.rad, a.scale, a.w, a.h, a.dx, a.dy, a.aspect);
//
//        int flip = rand()%2;
//        if(flip) flip_image(sized);
//        random_distort_image(sized, hue, saturation, exposure);
//        d.X.vals[i] = sized.data;
//        //show_image(sized, "image");
//
//        fill_truth_iseg(random_paths[i], boxes, d.y.vals[i], classes, orig.w, orig.h, a, flip, 14, 14);
//
//        free_image(orig);
//
//        /*
//           image rgb = mask_to_rgb(sized_m, classes);
//           show_image(rgb, "part");
//           show_image(sized, "orig");
//           cvWaitKey(0);
//           free_image(rgb);
//         */
//    }
//    free(random_paths);
//    return d;
//}
//
//data load_data_region(int n, String[] paths, int m, int w, int h, int size, int classes, float jitter, float hue, float saturation, float exposure)
//{
//    String[] random_paths = get_random_paths(paths, n, m);
//    int i;
//    data d = {0};
//    d.shallow = 0;
//
//    d.X.rows = n;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//    d.X.cols = h*w*3;
//
//
//    int k = size*size*(5+classes);
//    d.y = make_matrix(n, k);
//    for(i = 0; i < n; ++i){
//        image orig = load_image_color(random_paths[i], 0, 0);
//
//        int oh = orig.h;
//        int ow = orig.w;
//
//        int dw = (ow*jitter);
//        int dh = (oh*jitter);
//
//        int pleft  = rand_uniform(-dw, dw);
//        int pright = rand_uniform(-dw, dw);
//        int ptop   = rand_uniform(-dh, dh);
//        int pbot   = rand_uniform(-dh, dh);
//
//        int swidth =  ow - pleft - pright;
//        int sheight = oh - ptop - pbot;
//
//        float sx = (float)swidth  / ow;
//        float sy = (float)sheight / oh;
//
//        int flip = rand()%2;
//        image cropped = crop_image(orig, pleft, ptop, swidth, sheight);
//
//        float dx = ((float)pleft/ow)/sx;
//        float dy = ((float)ptop /oh)/sy;
//
//        image sized = resize_image(cropped, w, h);
//        if(flip) flip_image(sized);
//        random_distort_image(sized, hue, saturation, exposure);
//        d.X.vals[i] = sized.data;
//
//        fill_truth_region(random_paths[i], d.y.vals[i], classes, size, flip, dx, dy, 1./sx, 1./sy);
//
//        free_image(orig);
//        free_image(cropped);
//    }
//    free(random_paths);
//    return d;
//}
//
//data load_data_compare(int n, String[] paths, int m, int classes, int w, int h)
//{
//    if(m) paths = get_random_paths(paths, 2*n, m);
//    int i,j;
//    data d = {0};
//    d.shallow = 0;
//
//    d.X.rows = n;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//    d.X.cols = h*w*6;
//
//    int k = 2*(classes);
//    d.y = make_matrix(n, k);
//    for(i = 0; i < n; ++i){
//        image im1 = load_image_color(paths[i*2],   w, h);
//        image im2 = load_image_color(paths[i*2+1], w, h);
//
//        d.X.vals[i] = calloc(d.X.cols, sizeof(float));
//        memcpy(d.X.vals[i],         im1.data, h*w*3*sizeof(float));
//        memcpy(d.X.vals[i] + h*w*3, im2.data, h*w*3*sizeof(float));
//
//        int id;
//        float iou;
//
//        char imlabel1[4096];
//        char imlabel2[4096];
//        find_replace(paths[i*2],   "imgs", "labels", imlabel1);
//        find_replace(imlabel1, "jpg", "txt", imlabel1);
//        FILE *fp1 = fopen(imlabel1, "r");
//
//        while(fscanf(fp1, "%d %f", &id, &iou) == 2){
//            if (d.y.vals[i][2*id] < iou) d.y.vals[i][2*id] = iou;
//        }
//
//        find_replace(paths[i*2+1], "imgs", "labels", imlabel2);
//        find_replace(imlabel2, "jpg", "txt", imlabel2);
//        FILE *fp2 = fopen(imlabel2, "r");
//
//        while(fscanf(fp2, "%d %f", &id, &iou) == 2){
//            if (d.y.vals[i][2*id + 1] < iou) d.y.vals[i][2*id + 1] = iou;
//        }
//
//        for (j = 0; j < classes; ++j){
//            if (d.y.vals[i][2*j] > .5 &&  d.y.vals[i][2*j+1] < .5){
//                d.y.vals[i][2*j] = 1;
//                d.y.vals[i][2*j+1] = 0;
//            } else if (d.y.vals[i][2*j] < .5 &&  d.y.vals[i][2*j+1] > .5){
//                d.y.vals[i][2*j] = 0;
//                d.y.vals[i][2*j+1] = 1;
//            } else {
//                d.y.vals[i][2*j]   = SECRET_NUM;
//                d.y.vals[i][2*j+1] = SECRET_NUM;
//            }
//        }
//        fclose(fp1);
//        fclose(fp2);
//
//        free_image(im1);
//        free_image(im2);
//    }
//    if(m) free(paths);
//    return d;
//}
//
//data load_data_swag(String[] paths, int n, int classes, float jitter)
//{
//    int index = rand()%n;
//    String random_path = paths[index];
//
//    image orig = load_image_color(random_path, 0, 0);
//    int h = orig.h;
//    int w = orig.w;
//
//    data d = {0};
//    d.shallow = 0;
//    d.w = w;
//    d.h = h;
//
//    d.X.rows = 1;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//    d.X.cols = h*w*3;
//
//    int k = (4+classes)*30;
//    d.y = make_matrix(1, k);
//
//    int dw = w*jitter;
//    int dh = h*jitter;
//
//    int pleft  = rand_uniform(-dw, dw);
//    int pright = rand_uniform(-dw, dw);
//    int ptop   = rand_uniform(-dh, dh);
//    int pbot   = rand_uniform(-dh, dh);
//
//    int swidth =  w - pleft - pright;
//    int sheight = h - ptop - pbot;
//
//    float sx = (float)swidth  / w;
//    float sy = (float)sheight / h;
//
//    int flip = rand()%2;
//    image cropped = crop_image(orig, pleft, ptop, swidth, sheight);
//
//    float dx = ((float)pleft/w)/sx;
//    float dy = ((float)ptop /h)/sy;
//
//    image sized = resize_image(cropped, w, h);
//    if(flip) flip_image(sized);
//    d.X.vals[0] = sized.data;
//
//    fill_truth_swag(random_path, d.y.vals[0], classes, flip, dx, dy, 1./sx, 1./sy);
//
//    free_image(orig);
//    free_image(cropped);
//
//    return d;
//}
//
data load_data_detection(int n, String[] paths, int m, int w, int h, int boxes, int classes, float jitter, float hue, float saturation, float exposure)
{
    String[] random_paths = get_random_paths(paths, n, m);
    int i;
    data d = this;//{0};
    d.shallow = false;

    d.X.rows = n;
    d.X.vals = callocFloat2DArray(d.X.rows, 1/*sizeof(float*)*/);
    d.X.cols = h*w*3;

    d.y = make_matrix(n, 5*boxes);
    for(i = 0; i < n; ++i){
        image orig = load_image_color(random_paths[i], 0, 0);//sjx no load success?
        image sized = make_image(w, h, orig.c);
        fill_image(sized, .5);

        float dw = jitter * orig.w;
        float dh = jitter * orig.h;

        float new_ar = (orig.w + rand_uniform(-dw, dw)) / (orig.h + rand_uniform(-dh, dh));
        float scale = rand_uniform(.25f, 2);

        float nw, nh;

        if(new_ar < 1){
            nh = scale * h;
            nw = nh * new_ar;
        } else {
            nw = scale * w;
            nh = nw / new_ar;
        }

        float dx = rand_uniform(0, w - nw);
        float dy = rand_uniform(0, h - nh);

        place_image(orig, nw, nh, dx, dy, sized);

        random_distort_image(sized, hue, saturation, exposure);

        int flip = rand()%2;
        if(flip!=0) flip_image(sized);
        d.X.vals[i] = sized.data;


        fill_truth_detection(random_paths[i], boxes, d.y.vals[i], classes, flip, -dx/w, -dy/h, nw/w, nh/h);

        free_image(orig);
    }
    free(random_paths);
    return d;
}

static Object load_thread(Object ptr, data a_d)
{
    //printf("Loading data: %d\n", rand());
    Load_args a = (Load_args)ptr;
    if(a.exposure == 0) a.exposure = 1;
    if(a.saturation == 0) a.saturation = 1;
    if(a.aspect == 0) a.aspect = 1;

//    if (a.type == Data_type.OLD_CLASSIFICATION_DATA){
//        *a.d = load_data_old(a.paths, a.n, a.m, a.labels, a.classes, a.w, a.h);
//    } else if (a.type == Data_type.REGRESSION_DATA){
//        *a.d = load_data_regression(a.paths, a.n, a.m, a.min, a.max, a.size, a.angle, a.aspect, a.hue, a.saturation, a.exposure);
//    } else if (a.type == Data_type.CLASSIFICATION_DATA){
//        *a.d = load_data_augment(a.paths, a.n, a.m, a.labels, a.classes, a.hierarchy, a.min, a.max, a.size, a.angle, a.aspect, a.hue, a.saturation, a.exposure, a.center);
//    } else if (a.type == Data_type.SUPER_DATA){
//        *a.d = load_data_super(a.paths, a.n, a.m, a.w, a.h, a.scale);
//    } else if (a.type == Data_type.WRITING_DATA){
//        *a.d = load_data_writing(a.paths, a.n, a.m, a.w, a.h, a.out_w, a.out_h);
//    } else if (a.type == Data_type.INSTANCE_DATA){
//        *a.d = load_data_iseg(a.n, a.paths, a.m, a.w, a.h, a.classes, a.num_boxes, a.coords, a.min, a.max, a.angle, a.aspect, a.hue, a.saturation, a.exposure);
//    } else if (a.type == Data_type.SEGMENTATION_DATA){
//        *a.d = load_data_seg(a.n, a.paths, a.m, a.w, a.h, a.classes, a.min, a.max, a.angle, a.aspect, a.hue, a.saturation, a.exposure, a.scale);
//    } else if (a.type == Data_type.REGION_DATA){
//        *a.d = load_data_region(a.n, a.paths, a.m, a.w, a.h, a.num_boxes, a.classes, a.jitter, a.hue, a.saturation, a.exposure);
//    } else 
    if (a.type == Data_type.DETECTION_DATA){
        a_d.load_data_detection(a.n, a.paths, a.m, a.w, a.h, a.num_boxes, a.classes, a.jitter, a.hue, a.saturation, a.exposure);
    }
//    else if (a.type == Data_type.SWAG_DATA){
//        *a.d = load_data_swag(a.paths, a.n, a.classes, a.jitter);
//    } else if (a.type == Data_type.COMPARE_DATA){
//        *a.d = load_data_compare(a.n, a.paths, a.m, a.classes, a.w, a.h);
//    } else if (a.type == Data_type.IMAGE_DATA){
//        *(a.im) = load_image_color(a.path, 0, 0);
//        *(a.resized) = resize_image(*(a.im), a.w, a.h);
//    } else if (a.type == Data_type.LETTERBOX_DATA){
//        *(a.im) = load_image_color(a.path, 0, 0);
//        *(a.resized) = letterbox_image(*(a.im), a.w, a.h);
//    } else if (a.type == Data_type.TAG_DATA){
//        *a.d = load_data_tag(a.paths, a.n, a.m, a.classes, a.min, a.max, a.size, a.angle, a.aspect, a.hue, a.saturation, a.exposure);
//    }
    free(ptr);
    return 0;
}
static pthread_t load_data_in_thread(Load_args args, data d)
{
	pthread_t thread=new pthread_t() {
		
		@Override
		public void run() {
			// TODO Auto-generated method stub
			load_thread(args,d);
		}
	};
	thread.start();
//pthread_t load_data_in_thread(load_args args)
//{
//    pthread_t thread;
//    struct load_args *ptr = calloc(1, sizeof(struct load_args));
//    *ptr = args;
//    if(pthread_create(&thread, 0, load_thread, ptr)) error("Thread creation failed");
    return thread;
}

static Object load_threads(Object ptr)
{
    int i;
    Load_args args = (Load_args)ptr;
    if (args.threads == 0) args.threads = 1;
    data out = args.d;
    int total = args.n;
    free(ptr);
    data[] buffers =  new data[args.threads];//calloc(args.threads, sizeof(data));
    pthread_t[] threads = new pthread_t[args.threads];//calloc(args.threads, sizeof(pthread_t));
    for(i = 0; i < args.threads; ++i){
    	buffers[i]=new data();//args.d = buffers + i;
        args.n = (i+1) * total/args.threads - i * total/args.threads;
        threads[i] = load_data_in_thread(args, buffers[i]);
    }
    for(i = 0; i < args.threads; ++i){
        pthread_join(threads[i], 0);
    }
    out.concat_datas(buffers, args.threads);
    out.shallow = false;
    for(i = 0; i < args.threads; ++i){
        buffers[i].shallow = true;
        free_data(buffers[i]);
    }
    free(buffers);
    free(threads);
    return 0;
}

//void load_data_blocking(load_args args)
//{
//    struct load_args *ptr = calloc(1, sizeof(struct load_args));
//    *ptr = args;
//    load_thread(ptr);
//}

public static pthread_t load_data(Load_args args)
{
	pthread_t thread=new pthread_t() {

		@Override
		public void run() {
			// TODO Auto-generated method stub
			load_threads(args);
		}
    	
    };
    thread.start();
//    pthread_t thread;
//    struct load_args *ptr = calloc(1, sizeof(struct load_args));
//    *ptr = args;
//    if(pthread_create(&thread, 0, load_threads, ptr)) error("Thread creation failed");
    return thread;
}

//data load_data_writing(String[] paths, int n, int m, int w, int h, int out_w, int out_h)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    String[] replace_paths = find_replace_paths(paths, n, ".png", "-label.png");
//    data d = {0};
//    d.shallow = 0;
//    d.X = load_image_paths(paths, n, w, h);
//    d.y = load_image_paths_gray(replace_paths, n, out_w, out_h);
//    if(m) free(paths);
//    int i;
//    for(i = 0; i < n; ++i) free(replace_paths[i]);
//    free(replace_paths);
//    return d;
//}
//
//data load_data_old(String[] paths, int n, int m, String[] labels, int k, int w, int h)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//    d.X = load_image_paths(paths, n, w, h);
//    d.y = load_labels_paths(paths, n, labels, k, 0);
//    if(m) free(paths);
//    return d;
//}
//
///*
//   data load_data_study(String[] paths, int n, int m, String[] labels, int k, int min, int max, int size, float angle, float aspect, float hue, float saturation, float exposure)
//   {
//   data d = {0};
//   d.indexes = calloc(n, sizeof(int));
//   if(m) paths = get_random_paths_indexes(paths, n, m, d.indexes);
//   d.shallow = 0;
//   d.X = load_image_augment_paths(paths, n, min, max, size, angle, aspect, hue, saturation, exposure);
//   d.y = load_labels_paths(paths, n, labels, k);
//   if(m) free(paths);
//   return d;
//   }
// */
//
//data load_data_super(String[] paths, int n, int m, int w, int h, int scale)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//
//    int i;
//    d.X.rows = n;
//    d.X.vals = calloc(n, 1/*sizeof(float*)*/);
//    d.X.cols = w*h*3;
//
//    d.y.rows = n;
//    d.y.vals = calloc(n, 1/*sizeof(float*)*/);
//    d.y.cols = w*scale * h*scale * 3;
//
//    for(i = 0; i < n; ++i){
//        image im = load_image_color(paths[i], 0, 0);
//        image crop = random_crop_image(im, w*scale, h*scale);
//        int flip = rand()%2;
//        if (flip) flip_image(crop);
//        image resize = resize_image(crop, w, h);
//        d.X.vals[i] = resize.data;
//        d.y.vals[i] = crop.data;
//        free_image(im);
//    }
//
//    if(m) free(paths);
//    return d;
//}
//
//data load_data_regression(String[] paths, int n, int m, int min, int max, int size, float angle, float aspect, float hue, float saturation, float exposure)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//    d.X = load_image_augment_paths(paths, n, min, max, size, angle, aspect, hue, saturation, exposure, 0);
//    d.y = load_regression_labels_paths(paths, n);
//    if(m) free(paths);
//    return d;
//}
//
//data select_data(data *orig, int[] inds)
//{
//    data d = {0};
//    d.shallow = 1;
//    d.w = orig[0].w;
//    d.h = orig[0].h;
//
//    d.X.rows = orig[0].X.rows;
//    d.y.rows = orig[0].X.rows;
//
//    d.X.cols = orig[0].X.cols;
//    d.y.cols = orig[0].y.cols;
//
//    d.X.vals = calloc(orig[0].X.rows, sizeof(float[] ));
//    d.y.vals = calloc(orig[0].y.rows, sizeof(float[] ));
//    int i;
//    for(i = 0; i < d.X.rows; ++i){
//        d.X.vals[i] = orig[inds[i]].X.vals[i];
//        d.y.vals[i] = orig[inds[i]].y.vals[i];
//    }
//    return d;
//}
//
//data *tile_data(data orig, int divs, int size)
//{
//    data *ds = calloc(divs*divs, sizeof(data));
//    int i, j;
//    #pragma omp parallel for
//    for(i = 0; i < divs*divs; ++i){
//        data d;
//        d.shallow = 0;
//        d.w = orig.w/divs * size;
//        d.h = orig.h/divs * size;
//        d.X.rows = orig.X.rows;
//        d.X.cols = d.w*d.h*3;
//        d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//
//        d.y = copy_matrix(orig.y);
//        #pragma omp parallel for
//        for(j = 0; j < orig.X.rows; ++j){
//            int x = (i%divs) * orig.w / divs - (d.w - orig.w/divs)/2;
//            int y = (i/divs) * orig.h / divs - (d.h - orig.h/divs)/2;
//            image im = float_to_image(orig.w, orig.h, 3, orig.X.vals[j]);
//            d.X.vals[j] = crop_image(im, x, y, d.w, d.h).data;
//        }
//        ds[i] = d;
//    }
//    return ds;
//}
//
//data resize_data(data orig, int w, int h)
//{
//    data d = {0};
//    d.shallow = 0;
//    d.w = w;
//    d.h = h;
//    int i;
//    d.X.rows = orig.X.rows;
//    d.X.cols = w*h*3;
//    d.X.vals = calloc(d.X.rows, 1/*sizeof(float*)*/);
//
//    d.y = copy_matrix(orig.y);
//    #pragma omp parallel for
//    for(i = 0; i < orig.X.rows; ++i){
//        image im = float_to_image(orig.w, orig.h, 3, orig.X.vals[i]);
//        d.X.vals[i] = resize_image(im, w, h).data;
//    }
//    return d;
//}
//
//data load_data_augment(String[] paths, int n, int m, String[] labels, int k, tree *hierarchy, int min, int max, int size, float angle, float aspect, float hue, float saturation, float exposure, int center)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.shallow = 0;
//    d.w=size;
//    d.h=size;
//    d.X = load_image_augment_paths(paths, n, min, max, size, angle, aspect, hue, saturation, exposure, center);
//    d.y = load_labels_paths(paths, n, labels, k, hierarchy);
//    if(m) free(paths);
//    return d;
//}
//
//data load_data_tag(String[] paths, int n, int m, int k, int min, int max, int size, float angle, float aspect, float hue, float saturation, float exposure)
//{
//    if(m) paths = get_random_paths(paths, n, m);
//    data d = {0};
//    d.w = size;
//    d.h = size;
//    d.shallow = 0;
//    d.X = load_image_augment_paths(paths, n, min, max, size, angle, aspect, hue, saturation, exposure, 0);
//    d.y = load_tags_paths(paths, n, k);
//    if(m) free(paths);
//    return d;
//}

/**
 *sjx
 * */
private data concat_data(data d2)
{
    this.shallow = true;
    this.X.concat_matrix(d2.X);
    this.y.concat_matrix(d2.y);
    return this;
}
/**
 * sjx
 * */
private data concat_datas(data[] d, int n)
{
    int i;
    for(i = 0; i < n; ++i){
//    	System.out.println(String.format("汇总数据： 第 %d 个线程加载到的图片 %d x %d ", i, d[i].X.cols, d[i].X.rows));
    	this.concat_data(d[i]);
    }
    return this;
}

//static matrix concat_matrix(matrix m1, matrix m2)
//{
//    int i, count = 0;
//    matrix m=new matrix();
//    m.cols = m1.cols;
//    m.rows = m1.rows+m2.rows;
//    m.vals = callocFloat2DArray(m1.rows + m2.rows, 1/*sizeof(float*)*/);
//    for(i = 0; i < m1.rows; ++i){
//        m.vals[count++] = m1.vals[i];
//    }
//    for(i = 0; i < m2.rows; ++i){
//        m.vals[count++] = m2.vals[i];
//    }
//    return m;
//}

//static data concat_data(data d1, data d2)
//{
//    data d = new data();//{0};
//    d.shallow = 1;
//    d.X = concat_matrix(d1.X, d2.X);
//    d.y = concat_matrix(d1.y, d2.y);
//    d.w = d1.w;
//    d.h = d1.h;
//    return d;
//}
//
//static data concat_datas(data[] d, int n)
//{
//    int i;
//    data out = new data();//{0};
//    for(i = 0; i < n; ++i){
//        data _new = concat_data(d[i], out);
//        free_data(out);
//        out = _new;
//    }
//    return out;
//}

//data load_categorical_data_csv(String filename, int target, int k)
//{
//    data d = {0};
//    d.shallow = 0;
//    matrix X = csv_to_matrix(filename);
//    float[] truth_1d = pop_column(&X, target);
//    float[] *truth = one_hot_encode(truth_1d, X.rows, k);
//    matrix y;
//    y.rows = X.rows;
//    y.cols = k;
//    y.vals = truth;
//    d.X = X;
//    d.y = y;
//    free(truth_1d);
//    return d;
//}
//
//data load_cifar10_data(String filename)
//{
//    data d = {0};
//    d.shallow = 0;
//    long i,j;
//    matrix X = make_matrix(10000, 3072);
//    matrix y = make_matrix(10000, 10);
//    d.X = X;
//    d.y = y;
//
//    FILE *fp = fopen(filename, "rb");
//    if(!fp) file_error(filename);
//    for(i = 0; i < 10000; ++i){
//        unsigned char bytes[3073];
//        fread(bytes, 1, 3073, fp);
//        int class = bytes[0];
//        y.vals[i][class] = 1;
//        for(j = 0; j < X.cols; ++j){
//            X.vals[i][j] = (double)bytes[j+1];
//        }
//    }
//    scale_data_rows(d, 1./255);
//    //normalize_data_rows(d);
//    fclose(fp);
//    return d;
//}
//
//void get_random_batch(data d, int n, float[] X, float[] y)
//{
//    int j;
//    for(j = 0; j < n; ++j){
//        int index = rand()%d.X.rows;
//        memcpy(X+j*d.X.cols, d.X.vals[index], d.X.cols*sizeof(float));
//        memcpy(y+j*d.y.cols, d.y.vals[index], d.y.cols*sizeof(float));
//    }
//}
//
//void get_next_batch(data d, int n, int offset, float[] X, float[] y)
//{
//    int j;
//    for(j = 0; j < n; ++j){
//        int index = offset + j;
//        memcpy(X+j*d.X.cols, d.X.vals[index], d.X.cols*sizeof(float));
//        if(y) memcpy(y+j*d.y.cols, d.y.vals[index], d.y.cols*sizeof(float));
//    }
//}
//
//void smooth_data(data d)
//{
//    int i, j;
//    float scale = 1. / d.y.cols;
//    float eps = .1;
//    for(i = 0; i < d.y.rows; ++i){
//        for(j = 0; j < d.y.cols; ++j){
//            d.y.vals[i][j] = eps * scale + (1-eps) * d.y.vals[i][j];
//        }
//    }
//}
//
//data load_all_cifar10()
//{
//    data d = {0};
//    d.shallow = 0;
//    int i,j,b;
//    matrix X = make_matrix(50000, 3072);
//    matrix y = make_matrix(50000, 10);
//    d.X = X;
//    d.y = y;
//
//
//    for(b = 0; b < 5; ++b){
//        char buff[256];
//        sprintf(buff, "data/cifar/cifar-10-batches-bin/data_batch_%d.bin", b+1);
//        FILE *fp = fopen(buff, "rb");
//        if(!fp) file_error(buff);
//        for(i = 0; i < 10000; ++i){
//            unsigned char bytes[3073];
//            fread(bytes, 1, 3073, fp);
//            int class = bytes[0];
//            y.vals[i+b*10000][class] = 1;
//            for(j = 0; j < X.cols; ++j){
//                X.vals[i+b*10000][j] = (double)bytes[j+1];
//            }
//        }
//        fclose(fp);
//    }
//    //normalize_data_rows(d);
//    scale_data_rows(d, 1./255);
//    smooth_data(d);
//    return d;
//}
//
//data load_go(String filename)
//{
//    FILE *fp = fopen(filename, "rb");
//    matrix X = make_matrix(3363059, 361);
//    matrix y = make_matrix(3363059, 361);
//    int row, col;
//
//    if(!fp) file_error(filename);
//    String label;
//    int count = 0;
//    while((label = fgetl(fp))){
//        int i;
//        if(count == X.rows){
//            X = resize_matrix(X, count*2);
//            y = resize_matrix(y, count*2);
//        }
//        sscanf(label, "%d %d", &row, &col);
//        String board = fgetl(fp);
//
//        int index = row*19 + col;
//        y.vals[count][index] = 1;
//
//        for(i = 0; i < 19*19; ++i){
//            float val = 0;
//            if(board[i] == '1') val = 1;
//            else if(board[i] == '2') val = -1;
//            X.vals[count][i] = val;
//        }
//        ++count;
//        free(label);
//        free(board);
//    }
//    X = resize_matrix(X, count);
//    y = resize_matrix(y, count);
//
//    data d = {0};
//    d.shallow = 0;
//    d.X = X;
//    d.y = y;
//
//
//    fclose(fp);
//
//    return d;
//}
//
//
//void randomize_data(data d)
//{
//    int i;
//    for(i = d.X.rows-1; i > 0; --i){
//        int index = rand()%i;
//        float[] swap = d.X.vals[index];
//        d.X.vals[index] = d.X.vals[i];
//        d.X.vals[i] = swap;
//
//        swap = d.y.vals[index];
//        d.y.vals[index] = d.y.vals[i];
//        d.y.vals[i] = swap;
//    }
//}
//
//void scale_data_rows(data d, float s)
//{
//    int i;
//    for(i = 0; i < d.X.rows; ++i){
//        scale_array(d.X.vals[i], d.X.cols, s);
//    }
//}
//
//void translate_data_rows(data d, float s)
//{
//    int i;
//    for(i = 0; i < d.X.rows; ++i){
//        translate_array(d.X.vals[i], d.X.cols, s);
//    }
//}
//
//data copy_data(data d)
//{
//    data c = {0};
//    c.w = d.w;
//    c.h = d.h;
//    c.shallow = 0;
//    c.num_boxes = d.num_boxes;
//    c.boxes = d.boxes;
//    c.X = copy_matrix(d.X);
//    c.y = copy_matrix(d.y);
//    return c;
//}
//
//void normalize_data_rows(data d)
//{
//    int i;
//    for(i = 0; i < d.X.rows; ++i){
//        normalize_array(d.X.vals[i], d.X.cols);
//    }
//}
//
//data get_data_part(data d, int part, int total)
//{
//    data p = {0};
//    p.shallow = 1;
//    p.X.rows = d.X.rows * (part + 1) / total - d.X.rows * part / total;
//    p.y.rows = d.y.rows * (part + 1) / total - d.y.rows * part / total;
//    p.X.cols = d.X.cols;
//    p.y.cols = d.y.cols;
//    p.X.vals = d.X.vals + d.X.rows * part / total;
//    p.y.vals = d.y.vals + d.y.rows * part / total;
//    return p;
//}
//
//data get_random_data(data d, int num)
//{
//    data r = {0};
//    r.shallow = 1;
//
//    r.X.rows = num;
//    r.y.rows = num;
//
//    r.X.cols = d.X.cols;
//    r.y.cols = d.y.cols;
//
//    r.X.vals = calloc(num, sizeof(float[] ));
//    r.y.vals = calloc(num, sizeof(float[] ));
//
//    int i;
//    for(i = 0; i < num; ++i){
//        int index = rand()%d.X.rows;
//        r.X.vals[i] = d.X.vals[index];
//        r.y.vals[i] = d.y.vals[index];
//    }
//    return r;
//}
//
//data *split_data(data d, int part, int total)
//{
//    data *split = calloc(2, sizeof(data));
//    int i;
//    int start = part*d.X.rows/total;
//    int end = (part+1)*d.X.rows/total;
//    data train;
//    data test;
//    train.shallow = test.shallow = 1;
//
//    test.X.rows = test.y.rows = end-start;
//    train.X.rows = train.y.rows = d.X.rows - (end-start);
//    train.X.cols = test.X.cols = d.X.cols;
//    train.y.cols = test.y.cols = d.y.cols;
//
//    train.X.vals = calloc(train.X.rows, 1/*sizeof(float*)*/);
//    test.X.vals = calloc(test.X.rows, 1/*sizeof(float*)*/);
//    train.y.vals = calloc(train.y.rows, 1/*sizeof(float*)*/);
//    test.y.vals = calloc(test.y.rows, 1/*sizeof(float*)*/);
//
//    for(i = 0; i < start; ++i){
//        train.X.vals[i] = d.X.vals[i];
//        train.y.vals[i] = d.y.vals[i];
//    }
//    for(i = start; i < end; ++i){
//        test.X.vals[i-start] = d.X.vals[i];
//        test.y.vals[i-start] = d.y.vals[i];
//    }
//    for(i = end; i < d.X.rows; ++i){
//        train.X.vals[i-(end-start)] = d.X.vals[i];
//        train.y.vals[i-(end-start)] = d.y.vals[i];
//    }
//    split[0] = train;
//    split[1] = test;
//    return split;
//}

}